Printing press



Oct. 27., 1925- QM. LIPTON ET Al.-

PRINTING PRESS Filed June 21, 1922 9 SheetsShee t 2 VENTOBS fe/j A TTORNEY s Oct.- '27, 1925. 1,558,686 M. LlPToN r-:T AL

PRINTING PRESS Filed Jung 21, 1922 y 9 sheets-sheet s V ,d 2f 24 if,f/@.1

17IN I I. u ri@ Hw. Wrwlwm" Illlll-:IIHHMII Il l M. LIPTON ET ALPRINTING PRESS Oct. 27, 1925. 1,558,686

Filed Jun'e 21, 1922 9 sheets-she@",A 4

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BY C l ,wf/'r ATTORNEYS' M. -LIPTON ET Al.

FRINTING PRESS meduune 21, 1922- y l@ INVENTORW 9 Sheets-Sheet 5 fie/'rA TTOR NE YS M. I IPTON ET AL PRINTING PRESS oct. 21, 19.25. 1,558,686

Filed June 21, 1922 9 Sheets-sbagli um m .l n p i INI/.Elvollza`BYMMYMW( Oct. 27, 1925- A1,558,686

M. PTo N Er AL l PRINTING PRESS Filed June 21, 1922 9 Sheets-Sheet, '7

oct. 27,1925. 11,558,686.

M. LIPTON ET Al.

PRINTING PRES-S Filed June! 21., 1922 9 Sheets-Sheet,

' INVENTORS fMrATToRNEY Oct. 27,1925- 1,558,686 v M. LIPTON ET Al.

PRINTING PRESSl Fled' June 2l, 1922 Y 9 Sheets-Shes@ 9 l 3 W, W /M34.

ff/h4 TTOR NE Ys Patented Oct.v 27, 1925. i

UNITED STATES PTENTA OFFICE.

rromus LIr'rON, OE nU'rHEnEOED, LOUIs'iHAENLEIN, or EAST EUTIEEEOED, ANDEEEDEEICE w. HILL, or EUTEEEEOED, NEW JERSEY, EssIeNOEs 'ro THE EUcns aLENG MANUEILCTURING COMPANY, A CORPORATION or NEW YoEx.

PRINTING PRESS.

` Applicationdlled June 21, 1922. `Serial NO.;570,001.

United States papers), and LoUIs HAEN-v LEIN and FREDERICK W. HILL,citizens of the United States, residents, respectively, of city ofRutherford, county of Bergen, State of New Jersey, city of EastRutherford, county of Bergen, State of New Jersey, and city ofRutherford, county of Bergen, State of New Jersey, have invented certainnew and useful Improvements in Printing Presses, of which the followingis a specification.

This invention relates to printing presses and has particular` referenceto that class of machines known as the rotary oiset type.

An' important objectl of the invention is.

to provide in a machine of the class mentioned a simple and reliableautomatically actuated means for lifting the inking rollers from theplate cylinder andl moving the impression cylinder out of operativeposition with respect to the blanket cylinder, should a work-sheet,under any condition, fail to enter a machine in-the course O itsoperation.

A further object of the invention is to provide in a machine of theclass mentioned a manually yoperated means for throwing the blanketcylinder out of operative position in combination with anautomaticallyacutated mechanism for moving the same into an operative position withrespect to the plate and impression cylinders upon the insertion of awork-sheet. y

Another object of the invention 1s to pro-l vide a means, functioning inconnection with the several automatically actuated mechanisms, wherebycertain automatically controlled elements are rendered inoperative at,properly timed, predetermined intervals, and are maintained in theirrespective inoperative positions during predetermined periods to insurereliability in the operation of the machine as a unit.

A further object of the invention is to so construct and arrange theelements entering into the various automatically actuated controllingmechanisms that such controlling mechanisms may be easily `renderednonautomatic in their operation and made to depend upon manual controlfor the exer- ,cislng of their respective functions.

In addition to the above it is also an Obamr ject of this invention tomake possible the production of a machine of the class -men-v tioned,which is comparatively simple in design, relatively inexpensive tomanufacture, positive and reliable in operation, easily controlled,readil assembled, rigid in design and capable o withstandingprolongeduse with but a minor cost in upkeep.

Other Objects and certain -advantages of the invention will becomeapparent from the following description when taken in connection withthe accompanying drawings in which- Figure -1 is aside elevation of themachine showing the position of various automatically actuatedcontrolling elements in the resence of a work-sheet.

Figure 2 is a side elevation of the machine showing the Osition ofvarious automatically actuate controlling elements in the absence of thework-sheet.

Figure 3 is a front elevation of the machine.

YFi mental side elevation of an automatically controlled liftingmechanism for the inking rollers.

Figure 5 is a sectional viewtaken on line 5-5 o f Figure 4.

. Figure 6 is a sectional view taken on line 6--6 of Figure 4.

Figure 7 is a detailed view of a'lifting oller, showing the retainingmeans therev or.

Figure 8 is a perspective view of an eccentric adjusting pin shown inFigures 4 y' and 6. c y

Figure 9 is a front elevation of an intermittently actuated inkingmechanism.

Figure l0 `is an end elevation of the ink-l ing mechanism as viewed fromthe left in Figure 9.

gure 4:` is a somewhat enlarged frav- Figure 11 is a vertical sectionalView taken on line 11-11 of Figure 9.

Figure 12 is a perspective view of: a-double pawl unit, and releasingmeans therefor.

Figure- 13 is a side elevation of an automatic trip mechanism andoperating cam j 55 ving roll to be so operated, we have provided Figure16 is a view showing in elevation an oscillating trip actuating leverand a trip unit carried thereb Figure 17 is a sirie elevation of a tripunit controlling cam.

Figure 18 is a View similar to that of Figure 15, showing the operatingcam in an advanced positie Figure 19 is a fragmental elevation of a triparm releasing and trip lever locking mechanism.

Figure 20 is a front elevation of the automatic trip mechanism showingthe trip lever,

Figure 24 is a horizontal sectional view Ataken on line 21-24 of Figure22.

. Figure 25 is a sectional view taken on line 25 25-25 of Fi re 24.Figure 26 is a able cam. I y

Figure 27 is an enlarged `fra entalview v of a clutch engaging pawl anpawl carryperspective viewy of l a vari- 30 in disc.

A igure 28 is a fragmental sectional View taken on line 28-28 of Figure27.

In the drawing wherein for the purpose of illustration is shown what weat present 85 consider the preferred form of our invention, the numeral5 indicates, as a whole, a frame having a base 6 and lside members 7,which are arranged in vertical, positions and spaced an appreciabledistance apa-rt to accommodate the usual inking drum. 8, plate cylindr9, blanket cylinder 10, and impressien cylinder 11. T ese lelements aresuitably ournaled in their respective horizontal lpositions to the sidemembers 7, and are adapted to be' rotated through the instrumentality ofsuitable. trainsv of gears 12, which receive power of rotation from adriving ulley 13, adapted to be connected to a suita le source of powernotshown.

With the frame 5 there is associated, in proximity to the inking drum,8,an ink reservoir 14, adapted to receive a suitable quan` tity ofprinting fluid, which is supplied to the inking drum 8 through theinstrumentality of an intermittently actuated inking roll 15. Undercertain conditions-for example, when the machine'is about to be startedafter a prolonged interval of inoperativenessit is desirable to rotatethe inking roll 15 man- (l0' \'uallyV in order that the operator may beable to properly adjust certain elements not shown overning the quantityof printing fluid taen up by the inking roller rior tothe insertion ofwork and to enable t is inkproducin an oscillating lever 16, suitablylsup orted in operative relation with res ect to tlie inkin roll 15. Thelever 16 is-a apted to be osci lated around its pivotal connection andis provided with a pawl 17, adapted to engage a co-operating ratchetwheel 18, suitably connected with the inking roll 15. `.From thisconstruction it is' apparent that by properly operating the lever 16,the roll 15 may be rotated through as many complete revolutions as it isde emed necessary.

After the operator has begun to feed the work into the machine, it isdesirable to effect a uniform intermittent operation of the inking roll15, and, in order to accomplish this intermittent operation we haveprovided a double pawl unit indicated asa whole by the numeral 19. Thispawl unit includes a pawl 20, havinga pin -21 projecting from the sidethereof which is adapted to enter a slot 22 formed in an adjacent pawl23. These two pawls, namely, 20and 23, are adapted to be liftedsimultaneously by means of an arm 24, carrying alug 252 within which one`end of a compression spring 26 is disposed, ythe other end of thespring 26 being carried within a pocket 26', formed in the pawl 20.

In order to lift the arm 24 either manually or automatically, there isprovided a finger 27, which is adapted to engage a pin 28, carried bythe arm 24, the finger 27 being suitably connected to a horizontallydisposed operating rod 29, which may be operatedmanually through theinstrumentality of an operative lever-30, .or automatically through 'asuitable mechanism associated therewith and hereinafter moreparticularly described.

The pawls 20 and 23 and also the lifting arm 24, are suitably mountedupon a pin 31, carried by an oscillating bracket 32, connected to asuitable reciprocating vlever 33,'

which derives its reciprocatory motion from some appropriateoperatingpart of the machine. As a result of the reciprocatory movementof the lever .33 thevpawls 2O and 23 are caused to intermittentlyadvance their respective ratchet wheels 34 and 35 thus anintermittentrotation of the inking ro l 15 to which the ratchet wheelsare suitably connected. By the provision of the spring 26 it is apparentthat a yieldable con- '.nection is aordedbetween the two pawls 20 and 23and the arm 24. lThis yieldable connection is desirable for the reasonthat it permits the pawls 2O and 23 to remain in driving engagement withtheir respective ratchet wheels 34 and 35,.even if the lifting finger 27is actuated during the intermittent rotation of the inking roll 15, thusrelieving the awls 20 and 23 of any excessive strain to w ich they wouldbeA subjected if Vthe lifting arm 24 were connected directly orunyieldingly to the pawls.

With machines of the type to which our 139 invention pertains it isdesirable, under certain condltlons, to be able to vary or control theintermittent operation of the inking roll,

and to lmake possible this variation lwe have provided a cam 36, whichis rovided with a segmental gear 37, adapte to engage a ycooperativegear segment 38, suitably connected to a horizontally disposed shaft 39,which is adapted to be adjusted by means of a thumb screw 40, carriedbyl one of the side members 7 and so arranged as to engage an arm 41,suitably connected to the shaft 39. By varying the position of the arm41, through the instrumentality of the thumb screw 40, it is apparentthat the position oE the cam 36 may be changed withrcspect to the pin28, which is adapted to cooperate therewith as the lever 33 isreciprocated. A proper adjustment of the cam 36 will enable the pawls 20and 23 to be held free of their y respective ratchet Ywheels 34 and 35,in their forward movement, a suicient length of time to permit them topass over a predetermined number of teeth after which time they areallowed to fall into engagement with their respective rratchet wheels.This simple adjustment aifords a means by which theinking roll 15 may berotated through any predetermined number of degrees within certainlimits the minimum and maximum adjustments being, in this instance, suchthat we may vary the rotation of the inking roll from 1/2 tooth to 31/2teeth. The variation in the rotation of the` inking roll 15, inthe termsof half teeth, is made possible by reason of the fact that the pawl 2Ois longer than the pawl 23 to the extent of one-half inch the length ofa single tooth of either of the l ratchet Wheels 34 and 35. Ifforexample,

the cam 36 is so set with respect to the pin' 28, carried by the arm 24,as to `effect an intermittent rotation of the inkiug roll 15 to theextent of a half tooth, the pawl 23, as shown in Figure 11, will engagethe next succeeding tooth, and upon the next cycle of operation of thereciprocating lever 33, the

pawl 2O will engage the next succeeding tooth of its correspondingratchet wheel. This alternate 'engagement of th pawls 20 and 23, withthe succeeding teeth of their respective ratchet wheels 34 and 35, willconcontinue so long as the cam 36 is set to eii'ect an intermittentoperation of the inking roll 15 through a'fraction of a completerevolu-l tion, corresponding to the length of a half tooth. Since theadjustment-of the cam 36 may be made to eect a movement of the inkingroll 15, equivalent to a half tooth, yit follows thatv the adjustmentmay be made ranging iron1 a minimum throw to a maximum throw t roughintervals of a half tooth if desired. It is, of course, understoodthat"- an adjustmentV may be made from a minimum to a'maxlmum throwwithout necessarily passing through the several intermediate adjustmentsthat is't say, if thev cam 36 is set to advance the inking roll 15 adistance equal to a half tooth, the cam may be immediately adjusted toe'iiect a maximum intermittent' movement of the inking roll v15, whichwe have in this instance adopted as 3% teeth.'

The ink. suppliedl to the inking drum 8 from the reservoir 14 is in turntransferred to the usual printing plate carried by the cylinder 9,through, a pair of intermediate rollers 42, which contact with a pair ofrider rollers 43, adapted, to engage a plurality of form'rollers 44. Inthe event the operator of the machine should fail to insert a worksheet,it becomes necessary to immediately disengage the form rollers 44 fromthe printing plate in order to prevent the application of an excessiveamount ofi'nk thereto. In order therefore that these rollers may belifted-through the instrumentality of automatically actuated means,hereinafterparticularly described, we provide adjustable bearings 45 foropposite ends of their respective spindles 46. These bearings compriseadjustable housings 47, provided with offsets 48, having slots 49 formedthereiny within which are fitted adjustable eccentric bushings 50adapted to be held in position by means of bolts 51, having screwthreaded engagement with the side members 7. The eccentric bushings 50are provided in order that the housings 47 may be adjusted laterally toeffect an adjustment of the form rollers 44 with respect to the 'riderrollers 43. In making such an adjustment, the nuts 52, carried by thebolts 51, are loosened, and by a suitable tooltor instrument, theeccentric bushings 50 are rotated upon their respective bolts 51 todesired positions, whereupon the nuts 52 are run down into intimateengagement with the bushings 50, thereby locking them in the desiredpositions, and consequently locking the form rollers 44 in theircorrectly adjusted positions with respect to the rider rollers 43.

The bearings 45 also include adjustable stems 53, which are carriedwithin the housings 47, and counterbored to accommodate screw-threadedApins 54, having heads 55, adapted'to co-op'erate with nuts 56, carriedby screw-threaded portions of the stems 53, for retaining the stems inVtheir respective positions. By the provision of the nuts 56 and thescrew-threaded pins 54 it is possible toreadily adjust the form rollers44, with respect to the plate cylinder 9 and the rider rollers 43. Thisadjustment is made possible by unscrewing the nuts 56 and running thepins 54 further into screw-threaded engagement with the stems -53 toeffect an adjustment of the forni rollers 44 in one direction, and byunscrewing the nuts and running thel nuts 56. further down upon thescgew-threaded portions of the lstems 53 l 60 'edeto be so operatedthrough the instrumenwhen it is desired to eii'ect radial adjustment ofthe dorm rollers 44 in oppositedirections. By the provision of meansmaking possible these radial adjustments of the 5 form rollers 44, thesame may be adjusted vwith vrespect to the plate cylinder 9V andtherider rollers 43 with extreme accuracy, Ywhich is essential in machinesof the type to which our invention is directed, in order 10 that aproper application of ink to th printing plate may be afforded.

Over the lower ends of the housings 47 are disposed guard. plates 57,which are secured to the side members 7 of `the frame by means of bolts58. These guard plates are cut away to provide notches 59, adapted. toreceive project-ing studs 60, which are carried by the lower ends of thehousings 47 and urged radially inwardly toward the axis I ofthe platecylinder b y means of a' plurality Voli springs 61 carried withinpockets 62 formed in the guard plates. The studs 60 are adapted tonormally engage the peri heral face of rotatable discs 63, which aredis- .25 posed in concentric*relationsmvith respect to the axis of theplate cylinder 9, and V6oact with a plurality of rollers 64, carried bythe discs 63, in order to effect a radial displacement of thehousings/L7 and a si-milar displacement of the form rollers 44,l when itis -desired to lift these rollers and thus'effect a discontinuance ofthe'applicationfof ink to the'plate carried by the cylinder 9. In orderto electively lock the .rollers 64 in their respective positions theyare providedy with grooves 65, adapted to receive retainE ving wires 66,vcarried within periphera grooves 67v formed in the discs 63. From an Jinspection of Figure 4, it isl apparent that .when the discs 63 arerotated, the several rollers 64, carried by these ldiscs, are '"so fmoved as to lift the bearings 45 thereby7 moving the rollers 44 out ofcontact with the` 'i printing plate against the `influence of thel 5several springs 61. As'a'means for rotating the discs 63 to eiiect thedesired displacement of the/ form rollers 44, vwe have provided acomparatively simple mechanism, 'hereinafter more particularly"described,

i which is adapted kto be either manually o erated or automaticallyoperated in the a "sence of work-sheets.- e In printing machines of theclass to which `our invention-belongs, it is'necessary to ap- :H55 ply athin filml of water to the plate, carried by the plate cylinder 9, andto this end :we provide a plurality of dampening rollers 68, which laresuitably journaled at their opposite lends to movable brackets 69adapt-v tality of, a suitable handle 70 as to move the rollers eitherinto or out of engagement with the late carried by the plate cylinder.`It will e noted that no provision 1s 'made for Vautomatically operating'the' brackets 69 to move the rollers 68 into or 'out of engage- .mentwith the plate carried by the plate cyl- -the continued application ofwater from the rollers 68 to the printing platewould not provedetrimental As a matter of fact, it is desirable to keep the plate,carried by the plate cylinder, more or less dampened, in the absence ofwork, for the reason that if the plate were permitted to dry during theoperation of the machine in the absence of work, too great a quantity ofink might'be sup lied to the plate when feeding of the wor -sheets isresumed. If, however, it is observed that too much wateris beingsupplied to the plate carried bythe plate cylinder, after prolongedrunning in the absence of work, the rollers 68 may be easily disengagedfrom thef printing plate through the instrumentality of the operatinglever 70. As a source of water supply for'the rollers 68 we haveprovided a water reservoir 71 within which is arranged a fountain roller'72 adapted to\be rotated through a chain ofgears 73,operatively-connected to some suitable rotatinl part of the machine bymeans ofra vertic lly disposed shaft 74, carrying a horizontallydisposed gear 75, which meshes with a drivingl gear 76. This drivinggear is suitably connected to a relatively short shaft-77, to which issuitably connected a clutch member 78, and -upon which is looselymounted an elongated sleeve 79, 'having atene en'd .thereof a disc` 80,to which is pivotally connected a awl 81, normally retained intheposition s own at Figure 25, by .means of a compression spring 82which is carried within a suitable pocket 83 formed in the disc 80 and'adapted to engage a pin 84 carried by the pawl 81 and project'ing intothe pocket 83, as most clearly shown in Figures 27 and 28. .This vpawl81 'is adapted to so, co-act with the clutch member 78 as to lock'thesleeve 79 to the shaft 77 from its interlocking engagement inthe'absence of a work-sheet by a suitable mechanism hereinafter'particularly referred to,

which is adapted to be actuated either manually or automaticallyto-permit the shaft `77 `to rotate independently of the sleeve 79.

U on the sleeve 79 there i`s mounted a valos` llo

funder normal conditions, and free the same riab e cam'85, which is sokeyed to the sleeve 79 by means-of a spline 86, as'to lock the cam 85againstrotation with res ect to the sleeve ly thereon. The longitudinalmovement of the cam 85, with respect to the shaft 77, is eifected'bymeans of ashaft 87, which is at one end provided with an operating knob88 and at its other end maintained in screwthreadedengagement with asuitable bracket 89. Adjacent the screw-threaded end of the shaft 87,there is arranged a pair of collars 90, between which is tted a hubmember 91, carrying aforked arm 92, adapted to operate within aperipheral groove 93, formed in the cam member 85, near one end thereof.lIt is apparent that by rotatin the shaft 87 in either one direction orthe ot er a correspondinglongitudinal adjustment of the cam member 85upon the sleeve 79 may vbeeli'ected, due to the cooperative relationbetweennthe cam member 85, the forked arm 92 and the shaft 87.

The variable cam portion 94 of the cam member 85 is adapted to cooperatewith` a roller 95, carried by a depending arm 96, to which is connecteda hub portion 97, suitably locked to the shaft 98.

Upon opposite ends of the shaft 98 there are arranged loosely mountedsleeves 97 provided with horizontally disposedl arcuate shaped tongues99, adapted to enter arcuate shaped slots 100, formed in dependingwings'101, carried by collars 102, which are rigidly connected to theshaft 98 by means of set screws 103. The sleeves 97 are provided withupwardly projecting oscillatory arms 104 and 105 which are adapted tosupport an oscillating ductroller 106, which is moved alternately intoengagement with the adjacent dampening roller 68, and the fountainroller`72.V It will be appreciated that,

by reason of .the cooperation between the tongues 99 and the wings 101,the roller 106 is positivelymoved into enga ement with the fountainroller 72, butV is ree to move into engagement with the adjacent-dampening roller 68, under the influence of gravity and a tensionspring 107, suitably connected to the arm 105, and one of the sidemembers 7.

Since the roller 106 is-positively moved into engagement withthefountain roller 7 2, it becomes 'necessary toy provide a means wherebythe roller 106 maybe accurately adjusted with resl ect tothe face of thefountain roller, an to this end we provide' adjustable set screws' 108,which are carried by v105, at that period in the operation of the 120the wings 101 and project into the arcuate shaped Vslots 100. Byadjusting these set` lis so moved, through the instrumentality 'means,whereby the rovllel` 106,' when reduced' in. diameter, due to constantuse, may be correctly positioned or adjusted with respect to the surfaceof the fountain roller 72 to insurefa proper functioning thereof.

Due to varying conditions under which the machine is required tooperate, it is desirable to be able to vary 'the length of time that theroller 106 may be permitted to remain in contact with the fountainroller 72, and it is' for this 'reason that the cam element 85 isprovided with a variablecam portion 94. If conditions are such that theroller 106 need be held in con` tact with the fountain roller 72 only arelatively short riod, to supply a sujlicient quantity oiewater to theroller 68, which, in turn, is applied to the plate carried by the platecylinder 9, the shaft 87 of the operating knob v88, as to so. positionthe cam element 85 upon the sleeve 79 that only a relatively shortportion of the cam area will act upon the roller 95. If, on the otherhand, it is desired to maintain 90 the-roller 106 in contact with theroller 7 2, for a relatively long period of time, the shaft 87 'is soadjusted as to so positionthe cam element 85 upon the sleeve 79 that arelatively long portion of the cam area is permitted 'to act v upon theroller 95. It

will be understood,.of course, that the longer 'the roller 106 ispermitted to remain in contact with 4the fountain roller 72, the morewater will be taken up by the duct roller 106, which is covered with alsuitable absorbr ent material, whereas the shorter the peri-V od ofcontact between `the fountain roll- A er 72 and the duct yroller 106,the less will be the quantityl of water taken up `thereby. Thus, by therelatively simple cam adjusting means above described, a reliable j andaccurate means by which the amount of moisture vsupplied to the platecarried by the plate cylmder may be governed to 119" a satisfactorydegree.

In machines o this type, it is desirable to maintain the duct roller.106 out of contact with the fountain roller 72, in the ab` sence ofwork, particularly if the machine D5 is running idle for anyconsiderable length of time, and to accomplish this, we have provided ameans for discontinuing' the oscillatory movement of the 'arms-104 andmachinewhen the roller 106 is in contact with the adjacent roller 68,which means comprises a trip link 109adapted to coact with the .pawl 81-to release the same from the clutch `member 78, `thereby permitting125.

v :65. by any suitable means, such as a head 128,

. shaft 113, which is adapted to be actuated ried y the plate manuallyby rmeans of a lever 114, or automatically by a suitable meanshereinafter particularly described. f f

,From a consideration of Figure 25, it will appear thatthe' pawl 81 isreleased from its cooperative clutch member 78 only at that period inthe operation of the machine when the low part Vof the cam 94 is inengagement with the roller 95, at which instant the roller 106 is incontact with then adjacent ,roller 68, regardless of whether the releaseiseffected manually or auto-y matically. To have the roller 106 contact-with the adjacent roller 68, upon failure to introduce work-sheets intothe machine, is particularly advantageous, for the reason that suchmoisture as might be contained in the absorbent material of the roller106 is gradually sup lied to the dampenin rollers 6.8, and t us theplate carc linder 9 is kept moist, so that when a work-sheet is againfed into the machine, the plate carried by the plate cylinder willconsequentlytake up or receive only a suitable ,amount of printing uid.

The train of gears 73, through which the .roller 72 is driven, includes,in addition to the gears 75 and 76, hereinbefore mentioned, a relativelysmall ear 115, suitably connected to the shaft 77, which gear, in turn,meshes with a gear 116, journaled upon a stub shaft 117, which iscarried by a wing 118. This wing -is loosely mounted upon the shaft 77and is provided with a screwthreaded stud 119, projecting through anarcuate sha ed slot 120, formed in an extended portlon 121 of the framemember 7. By loosening a wing nut 122, carried by the stud 119, the wing118 may be swung about the shaft 7 7 as a pivot, in order to disengagethe spur gear 123, winch is ofperatively connected with the gear 1,16,rom a similar Y gear 124, carried by the fountain roller shaft 125. Thegear 124 has formed therewlth a second gear 126, which, together withthe gear 124, is splined to the shaft 125 by Veo means of a key 127,both. gears bein adapt- 1 ed to be moved longitudinally on t e shaft125z in orderthat the gear 126 may be so positioned as to mesh lwith thegear 123. Uponso ositiloning the gears 124 and 126 that the lgtter namedgear may mesh'with the gear. 123, the wing 118 is' moved about the shaft77 as an axis,A thereby bringing the gear 123 into mesh with the gear126,

118 isllocked in osition by means of t e wing nut 122, tliiereby lockingthe gear 123 in engagement with the` gear 126. When the gears 124 and126 are in the position shown-in Figure 22, they are preventedl frommoving in one direction carried by the shaft 125, and are prevented frommoving in an opposite direction by means of a head 129 carried by thestub shaft 117. If the gears 124. and 126 are so moved as to bring thelatter named gear into engagement with the gear 123, the head 129,carried b the stub shafty 119, is permitted to enter tlie space affordedbetween the 'gears 124 and 126,) whereby they are locked' againstlongitudinal movement upon the shaft 125 in either direction. With thegears meshing, as shown in Figure 22, the

fountain roller 72 is rotated at a` given rate of speed, but if thegears 124 and 126 are so moved as to bring the latter named gear intoengagement with the gear 123, the

speedof rotation of the roller 7 2 will neces-` through theinstrumentality of a positively acting cam 133, carried `by ahorizontally disposed cam shaft 134. The abutment 131, in its operation,vis adapated to move Vthe work-'sheet 130 forward into the machine,whereupon it is gripped by a suitable gripping mechanism, not shown,which is cooperatively associated with the impression cylinder 11.

So long as these work-sheets continue to be fed into the machine, .theform rollers 44 are maintained in contact with the plate carried by theplate cylinder 9, and the impression cylinder '11 is also maintained incontact with the blanket cylinder 10, but if, for any reason, one ofthese Work-sheets should fail to pass into the machine, the form rollers44 are instantly lifted out of contact with the plate and likewise theimpression cylinder 11- is immediately disengaged from the blanketcylinder 10. This lifting and disengagementis effected au-l -ftomatically by means ofza trip linger 135, carried by a horizontallydisposed rod 136, which is ada ted to be moved, in the absence of awork-s eet, from Ithe position shownin yFigure 18 to that vof Figure 13,by reason of a weighted trip arm v137. When the trip arm 137 drops fromthe position shown iii-Figure 18 to the position' shown in Figure 13, itengagesa trip lever 138, which adapted to ,coact with a cam 144,suitably connected to the cam shaft 134, whereas the boss 143, connected,to the relatively long arm 141, is adaptedv to coact with a pairofguide fingers 145 carried by rlink 146, p-ivotally connected at its endsto a pair of `depression fingers 147 and 148,

/which, in turn, are pivotally connected to an oscillating vlever 149.kThis oscillating 'lever 1s pivotally connected to a suitable portlon ofthe `frame 5, .by means of a pin 150, and is provided relatively near`its free yoke 151, which is'adapted to an end with a straddle the shaft134, intermediate the cam 144 and a grooved cam wheel 152, carrying arelatively steep cam 153, surrounded by a cam ring 154, which, with thecam 153, forms a cam groove 155.` Vithin the .cam groove 155, thereisarranged a cam 'roller 156,. carried by a pin 157, which is connectedwiththe oscillating lever 149, relatively near its free end.

- It is apparent that, as the cam 'disc 152 rotates in the direction ofthe arrow, shown in Figures 13, 15` and 18, the oscillating.; lever 149is, at its free end, moved in an arc, thereby lifting *and .lowering the`depression ngers 147 and 148. It is also apparent that the cam 144,Acooperating with the boss 142;

causes a positive movement ofthe trip. lever 138 in one direction aboutits pivot 139, the

lever being moved in .an opposite direction,

about its pivot l139, by means of a tensionv spring v158. If, however, awork-sheet 130 f fails to pass into the machine, the arm 13 will engagethe upper end .of the trip lever 138,l when the same has been movedagainst the influence of the spring 158 by the cam 144, and due to thisengagement of the arm 137 with the trip lever 138, the same is prep.vented -from moving under the influence of the spring 158, in which casethe depression fingers 147 and 148, due to the engagement of the boss143 with the guide iingers- 145, are locked in their` respectivepositions, shown in Figure 13, upon the completion of the upwardmovement ot the free end of the oscillating lever 149. Immediately afterthe cam 144 is freed from the boss 142, the camsl 153 begins tocoact'with the roller 156 t0 .'x'noveuthe free end'of the oscillatingmembei.`

149 downwardly, in which case'the. depression finger 147 cooperates withan outwardly projecting pin 159, `carried by a rocking Y ce that shownin Figure 15, the-shaft 162 will beam 160, to lower that endo therocking .beam 160, which carries the. pin 1595 and simultaneously liftsthe opposite end ofthe vrocking beam 160, which carries asimilaroutwardly projecting pin161.

Since the rocking beam 160 is rigidly connected to a horizontallydisposed shaft 162, which projects 'through the side members- 7,

it vfollows that in moving the rocker arm 160 from Vthe position showniny Figure 13Y to be slightly rotated, thereby moving the opdevice, butsince corresponding levers onl both sides ofI the machine aresubstantially identical, it is deemed necessary to describe onl thosewhichbare shown in Figures 1 2. v When the foot163 is moved from theposi- 'tion shown in `Figure 1, to the position .shown in Figure 2, abell crank lever 164 is rocked about its pivotal connection by means ofa link 165 connecting one arm of the lever with thevfoot 163.Thisrocklng' move- Iment otk thebell'crank lever 164 lifts 'an operatingrod 166, which is connected tothe otherv arm of the bellcrank `lever164, and it is due to the lifting of the operating rod 166 that theseveral form rollers 44 are vlifted free 4from engagement with thefplatecarried by the plate cylinder 9. (llo veiiect this diserating feet 163,which are rigidly connected engagement of the 'rollers 44with the platecarried by the plate cylinder 9, we provide a bell crank lever l167,which is pivotallyconneited to theside m'embei` 7. This bell crank leveris provided with a relatively short arm 168, which carries a stud169,adapted to enter a yoke 170, carried at the upper end of the operatingrod '66. In order to retain the Ayoke 17() in engagement with the stud169, we have-provided a link 171, .which is connected to. theupper endof the yoke 170,

and provided with awing172, having a slot 173 formed therein. This wingis adapted toA cooperate with a locking pin 174, to retain the rod 166in a vertical position, 'in which position the yoke 170 is effectivelylocked in operative connection with the stud 169. 'If

it should be'desire'd to'disengage the yoke 170 from' the stud 169,theoperating rod 166 may be moved to and locked in the. position shownin Figure 2, in which positlon the bell crank lever 167 is adapted to beactuatedv i manually` through the instrumentality of an extended arm174', provi-ded with an operating handle 175.

The bell crank lever 167,. adjacent the relatively short arm 168 isprovided with aseoond relatively short arm 175', which, in turn, isconnected to 'the concentric disc 63, by means of an interposed link176. By the rovision'of'the operating rod 166 and the ellcrank lever167, itisobvious that a positive a v ing the disc -63 from the position.shown 1n eliable'means is a-Eorded. for mov- Figures 'l1-and 4 to theV'position shown in Figure '2, when the' f eet 163 are moved from theposition shown 1n Figure 1 to the position shown in Figure 2, in theabsence of a work-sheet 130. y moving the disc 63 vfrom 4. in Figure 2is the same as that the position shown in Figures 1 and 4 to theposition shown in Figure 3, the rollers 64 are so moved as to engage thestuds 60, and liftthe housings 47, thereby moving the form rollers 44out of engagement with the plate carried by theI plate cylinder 9.

At t'he same time the operating rod 166 is moved upwardly to disengagethe form'rollers 44 from the plate carried by the plate cylinder 9, theimpression cylinder 11 is disengaged from the blanket cylinder 10. To

eiect disengagement 'of the impression cylinder 11 from the blanketcylinder 10, We provide eccentric journals 177 for the impressioncylinder 11, one of Which journals is shown in Figure 2. By suitablyrotating these journals, in the absence of a Worksheet 130, it isobvious that the impression cylinder 11 may be disengaged from -t'heblanket cylinder 10, and to effect this rotation We connect the journals177 with the feet 163 by means of interposed links 178. Thus, it isobvious that when the foot 163 is moved from the position shown inFigure 1 to the position shown in Figure 2, the jourvnals 177 will be somoved as to bring about the desired separation of the blanket andimpression cylinders 10 and 11, respectively.

Since it is not desired to automatically disengage the blanket cylinder10 from the plate cylinder 9, when a Work-sheet'fail's to pass into themachine, We have so designed a -throw-out mechanism for the blanketcylinder 10 that the same may be disengaged from the plate cylinder onlyby manual operation. This throW-out mechanism shown at the oposite sideof the machine, and comprises a ll crank lever 179, which is connectedtoa horizontally disposed shaft 17 9 and includes a pair of relativelyshort arms 180 and 181. The arms 18() are, by means of links 182,

operatively connected -to eccentric bearings 183, which are carried uponopposite, sides of the machine for supporting the lblanket cylmoving thebell crank levers' inder 10. By 17 9through the instrumentality 'of anoperating handle 184, from the position shown in Figure 1 tothe positionshown in Figure 2, the eccentric bearings 183 are slightlyrotatedfthereby moving the blanket cylinderv 10 slightly out of contactwith the plate cylinder 9.

Inasmuch as it is desirable to vautomatically move theblanket cylinderl() into engagement with the plate cylinder 9, upon the insertion of aWork-sheet'130, We have provided a link 185, which is pivotallyconnected at one end to the upper end of the link 17 8.,A

This link 185, at its opposite end is provided With a head 186 having aslot 187 formed therein, which isadapted to receive a pin 188, carriedby the relatively short arm J181 o'f the bell crank lever 179.

When the link 185 is in its lowermost position, and the operating lever184 is depressed, as shown in Fi ure 2, the pin 188 will be so disposedwithin the slot 187 that a movement' of the foot 163 from the position'shown in Figure 2 to the position shown in Figure 1 will cause theoperating lever 184 to automatically move from the position shown inFigure 2 to the position shown 1n Figure 1, thereby extending the link182, which causes the ecceritric bearing 183 to so move that the blanketcylinder 10 is urged into contact with the plate cylinder 9. From theconstruction and arrangement of the bell crank lever '179 and theinterposed link 185, it is apparent that the only period during whichthe blanket cylinder 10 might be dis-i p the other hand, it isdesirable, under all conditions, incident to the feeding of work intothe machine, to maintain the blanket cylinder 10 in engagement With theplate cylinder 9, and from the construction and arran ement .of thevarious elements included in t' e control mechanism forthe blanketcylinder 10, it Will appear that the desired engagement of thiscylinder. with the plate cylinder is insured upon the introduction of asingle sheet into the machine after the blanket cylinder 10 has. beendisengaged from the plate cylinder 9, vvhich disengagement is madepossible, as. above mentioned, only when the foot 163 has been moved tothe position shown in Figure 2, as a result of failure to introduce theWork intol the machine.v j

In machines of this type, it is especially desirable to discontinue theapplication of the printing fluid to the inking drum 8, upon v thefailure to introduce a Work-sheet into the machine, and While We havedescribed a manually operated means for effecting a dis- .continuance ofthe applic tion of printing lfluid, it is particularly advantageous tobe able to automaticall `discontinue-the application of printing iyhidupon the failure Vto introduce a Work sheet into'the machine.

.In order that the inking mechanism hercinbefore described may beautomatically controlled, We have provided the lever 30 with anextension 189, carryingl a stud 190,

which is adapted to engage a link A191, pivotally connected to anoscillating arm 192. The/oscillating arm 192 is pivotally connected, atone end, to a suitable support '193 and .control of the inkingmechanism,

at its other end to an actuating rod 194, which, in turn, is connectedto a relatively short arm 195, adapted to befactuated by the bell cranklever 167. The'link 191 may be lifted free from the stud 190, when ityisedesired to control the inking mechanisnfmanually, but in order tofacilitate an automatic the link 191 is permitted to assume the positionshown in Figures 1 and 2, in `Which position a direct connectionisaforded between the bell crank lever 167 and the operating shaft 29.By the provision of the rod 194, and its several associated cooperativeelements, it is apparent that when the operating rod 166 is lifted, dueto the movement of the foot 163, from the position shown in Figure 1 tothe position shown in Figure 2, the relatively short arm 192 will be somoved asto partially rotate the'shaft 29, thereby causing thedisengagement oi the pawls 20 and 23 from their respective cams 34 and35 through the instrumentality of the Enger 27.

As above mentioned, in describing the operation of the manually operatedcontrolled mechanism for the inking roller 15, a disengagement of thepawls 20 and 23` from their respective A'ratchet wheels will cause4 theinking roller 15 to remain inoperative so long as these pawls aremaintained vin their disengaged positions. Upon the introduction,however, of a work-sheet into the machine, the pawls 20 and 23 will bepermitted to drop to their normal positlons l and engage thelrrespective ratchet Wheeler 34 and as aresult of the Imovement of thefoot'163 from the position shown in Figure,

2 to the position shown in Figure 1, which movement is automaticallybrought about through the instrumentality of thetrip mechanism,including the depression fingers 147 and 14s.

It has been hereinbefore mentioned that the oscillating duct roller 106may be rendered inoperative manually, through the instrumentality of thereleasing `link 109, which, when operated through the shaft 113, servesto disengage the pawl 81 :from the clutch member 7 8. It is desirable,however, under ordinary conditions, to releaseA lthe awl 81automatically upon the failure to `introduce a Work-sheet intocthemachine, so

that the roller 106A will lie normally against the adjacent dampeningroller 68, While the machine is running free, and to accomplish thisautomatic release, we provide a depending arm 196., which is connecteddirectly to the shaft 113. This arm is normally Vconnected by means of alink 197 to an arm198, which is adapted to be moved 'upon the operationoi the bell crank lever 167. The link -197 is bent, as shownat 199, toengage a pin 200, carried by the arm 196, so that when the liik`197 ismoved in vone direction or the cent dampening roller 68, this beingdesir-v able for the reason that it is advantageous to continue theapplication ofwater to the i plate carried by the plate cylinder, undercertain conditions, even in the absence of a work-sheet. If, for anyreason, it should be desired to discontinue the automatic'control of theroller 106, such may be accomplishedl byl lifting the link 197 out ofengagement with the pin 200, in which case the link 197 may bejmamtainedout of engagement with the pin 200'by means of an arm 201, pivotallyconnected to the upturned end. of the link 197 and adapted to be' so`held as to maintain the 'link 197 in it's lifted position by means of akeeper 202, suitablyconnected `to the side member 7.

1t might `be mentioned that to enable the .operator to readily determinewhether or not the roller duct 106 is rendered inoperative or isfunctioning in an oscillatory manner, when the link 197 islifted out ofengagement with the pin 200, to permit the .roller to be manuallylcontrolled, 'We have provided the lever 114 with a'pointer 203, which,when registered with the word On indicates that the depressing link 109is so positioned as to permit the pawl 81 to be maintained in lockingengagement with the clutch member 78, in which engagement the roller 106is oscillated during the operation Vof a machine,` it bein movedalternately into contact with the adjacent roller 68 and thefountainroller 72. If, on the other hand, the pointer 203 registers withthe word' Ott the operatorwill 'understand that the depressing link 109is so positioned as to release the driving engagement be- 'tween the cammember 85 and-the shaft 77,

thus permitting the roller 106 to maintain with the adjacent a positionin contact On and Off and the provision of the pointer 203, the operatoris enabled, at a glance. to determine in which direction to move theleve-r 114 to manually bring about a desired condition of the roller106; that is to say, l1e .is-enabled to readily determine Whether to.move the lever to the'right or j left to, cause the roller 106' tooscillate or remain constantly in contact with the adjacent roller '68.

In applying new blankets `to the blanket the surface of the blanketcylinder, with# cylinder, in machines of this type, it is customary toplace the blanket around the cylinder, and then run the machine for a sort period, after which the operation of the machine is discontinued toenable the blanket, which has been stretched more or less, due tocontact between the impression cylinder and the blanket cylinder, to bedrawn more tightly around the blanket cyl inder. This intermittentoperation of the machine is carried out with the blanket c linder incontact with der a suiiicient'number'of times to adequately stretch theblanket,

e maintained in anintimate relation with wrinkling or puckering, due toduring the norout undue further excessive stretching mal operation ofthemachine.

naaf

l In order that the machine embodying our invention may be so operatedin the absence ofy work-sheets as to maintain the blanket sion cylinder11, we have provided a means or preventing engagement ofthe klockingfinger 137 with the upper end of the trip lever 138, under allconditions, so that the trip lever 138 may be free to oscillate aboutits pivot 139 in the same manner as if worksheets 130 were being fedthrough the machine continuously. The means which we employ forretaining the finger 137 out of engagement with the trip lever 138 isshown most clearly in Figure 19,.and comprises a cam 204 rigidly securedto an operating shaft 205, which is provided With an opery ating handle206, having apointer 207 associated therewith. The cani 204 is adaptedto be actuated through the shaft 205, and

is provided with a series of indents 208, 209 and 210, which are adaptedto cooperate with a spring pressed plunger 211 carried Within a suitablehousing 212, attached to one of the frame members 7. The spring pressedplunger 211, when seated within the indent 208, serves to retain the cam204 in its verticaldotted line osition, and when cooperatin with the inent v209, qthe cam 204 is hel in its full line position, shown in Figure19. If'it is desired to retain the cam -204 in a horizontal position,soas to engage a lug 213, carried by the trip lever 138, the shaft205 isso moved as to permit the plunger 211 to enter the indent 2 10.

With the shaft 205 so 'positioned' as to maintain the cam 204 in thedotted line position shown in Figure 19, the trip arm 137 is retainedunder `all conditions in the position shown in Figure 18, which positioncorresponds to that which the trip arm would occupy inthe presence of aworksheet 130. 1t follows, therefore, that when the camv204 is retainedin its dotted line position, shown in Figure 19, the foot 163 will,under all conditions, be maintained vthe impression cylin-A so that thesame will cylinder in contact with the impres- .A

in the position shown' in Figure 1, in which position the blanket andimpression cylinders 1 10 and 111, respectively, are retained in surfaceengagementY with each other. The machine may therefore be operated forany desiredlength of time, and yet maintain a positive engagementbetween the blanket cylinder 10 and impression cylinder 11', even in:the absencef work-sheets, thus enabling the operator to easily stretcha blanket newly applied to the blanket cylinder 10.

Under normal operating conditions, the shaft 205 is so positioned as tomaintain the cam 204 in its full line position, shown in Figure 19, inwhich. position the trip arm 137 is adapted to `engage the upper end ofthe trip lever 138 to retain the same in the. position shown in Figure13, whereby an automatic operation of the foot 163 -is accomplished, ashereinbefore described, to move the various cooperating elements of themachine into their respective operative positions, shown in-Figure 2. Onthe other hand, the trip arm 137 is free to move, upon the resumption ofthe printing operations, from its position shown in Figure V13 to itsposition shown in Figure 18,

tofacilita-te an automatic movement of the l various cooperatingelements-of the machine from their respective positions shown in Figure2 to their respective normal operating positions shown in FigureI l.

Under certain conditions, it might be de` sirable to retain the severalelements of the machine in .their respective inoperative positions,shown in Figure 2, and in order to positively retain the severalelements of the machine in their respective inoperative po#I sitions,the cam 204 may be so moved through the instrumentality of the shaft 205as to permit the plunger211 to enterv The cam,

so positioned as to engage' the lock 213, carried by the trip lever 138,the operation of the machine will be such that the various operativeelements of the machine will be maintained in their respectiveinoperative positions, in which case the blanket cylinder 10 is retainedin a spaced relation with re;

spect lto its cooperating impression cylinder 11, so'that any number ofwork-sheets may jee-tion to printing operations.

In'order to enable the operator to deter- `mine any one ofthe threepositions to which the lever 206 must be moved, to produce a givenposition of the cam 204, we have inbe passed through the machine withoutsub- 1 25 Lacasse dicated two o the directions in which the pointer 207must point by the abbreviations Imp and Auto.'which are respectivelyabbreviations of the words Impression7 and Automatic rlhe third positionto which `the pointer must point to produce a given position of the camy204 is indicated by the word Trip It is apparent that when the pointer207 registers with the abbreviation Imp the cam QOL is maintained in itsvertical position. in which positionthe blanket and impression cylin-Aders 10 and 11, respectively, are maintained in an intimate surfaceengagement. When the pointer 207 registers with the abbreviation uto theoperator will readily understand that thecam 204 is maintained iu itsfull line position, shown in Figure 19,

in which position the machine is permitted to operate in everyparticular in a normal manner. The operator will also appreciate that bymoving the lever'206 to bring the pointer 207 into registration with theword F'lripf the cam 204 will be permitted to assume a horizontalposition, in which position the trip lever 138 will, under allconditions, be retained in its position shown in Figure 13, in whichposition the blanket and impression cylinders 10 and 11 are maintainedditions.

We claim:

1. A printing machine having a plate cylinder adapted to carry aprinting plate, a source of printing fiuid supply, an inking drum, aninking roller adapted to transfer printing fluid from said source o'fsupply to said inlring drum, a pair of ratchet wheels cooperativelyassociated with said inking roller, a pair of pawls adapted to cooperatewith said ratchet wheels, means for oscillatingsaid pawls in. a givenpath whereby said inking roller is intermittently actuin a spacedrelation under all conated, and means yieldably connected with saidpawls for liftingthe same out of engagement with their' respectiveratchet wheels.

2. A printing machine having a plate cylinder adapted to carry aprinting'plate, a source of-printing Huid supply, an inlging drum, aninking roller adapted to transfer printing uid from -said source ofsupply toA said inking drum, a pair of ratchet wheels cooperativelyassociated with said inking roller, a pair of pawls. adapted tocooperate with said ratchet wheels, means for oscil lating said pawls ina given path whereby said inking roller is intermittently actuated,means yieldably connected with said pawls for lifting the sameout ofengagement with their respective ratchet wheels, and auto-` maticallyVactuated means for effecting an operation of said pawl lifting meansupon the failure to introduce a work-sheet into the machine.

.lar adjustment -is bron said plate to interrupt the application otprinting fluid thereto, and automatically ac- -tuated means foractuating said cam upon the failure to introduce a work-sheetinto themachine whereby said supports arev ,moved and said rollers aredisplaced' with respect to said plate cylinder.

4. A printing machine having a plate cylinder adapted to carrya'printing plate',v a pluralityof rollers adapted to normally -contactwith said plate and supply printing fluid-ithereto, supports for saidrollers, said supports' having slots formed therein, eccentric elementswithin said slots, said eccentric elements being adapted to be so movedas to adjust said supports with respect to each other whereby a similar.adjustment is brought about between said '\rollers, means tending toretain said supportsin such positions as to permit said rollers tointimately contact with said plate, and means for so moving saidsupports as to displace said rollers 'withirespect to said cylinderwherebythe application of printing iuidthereto l is discontinued.

5. 'A printing machine having a plate cyl; inder adapted tocarry aprinting plate, 'a

' lurality of rollers adapted to'normally contact with said plate and suply printing;

fluid thereto, supports for sai rollers, said n 4 supports having slotsvformed therein, eccentric elements within vsaid slots, said ec.-'centric elements adapted to be so moved as to effect an adjustment ofsaid supports with respect 'to each other whereby a simiht about betweensaid rollers,- means ten ing .to retain said supports in such positionsas to permit said rollers to intimately contact with said plate, andautomatically actuated means for so moving saidsupports as -to free saidrollers from engagement with said plate upon the failure to'introduce aWork-sheet 20 into the machine.

6. A rmtmg machine having a.Y plate cyl` inderfav apted to carry aprinting plate, a

fountain roller adapted to be rotated and carry upon its surface a'fihnof moisture'. 25`

adapted to transmit a dampening roller` moisture to said plate, anintermediate roller fountain roller, means for moving said interadaptedto be so movedv as to alternately l contact with said dampening rollerand said .A W

